In the context of Piaget's stages of cognitive development, children in the understand the world only through sensory contact and immediate action because they cannot engage in symbolic thought or use language.

- Sensorimotor stage.

Explanation:

'Sensorimotor' stage is demonstrated as the stage of development that a child experiences since birth to two years of age. As per the question, during the 'sensorimotor stage' the children develop an understanding of the world world around them through the trial-and-error method via using their senses(sight, smell, taste, touch, etc.) along with the motor abilities as at this stage they are unable to associate a symbolic thought or employ language to express them. Thus, 'sensorimotor' stage is the correct answer.

a. the moon was locked into orbit by the earths gravity as it was passing by and capture hypothesis i think